<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <table>
        <tr><th>姓名</th><th>性别</th><th>年龄</th></tr><!--表头单元格 -->
        <tr><td>姓名</td><td>性别</td><td>年龄</td></tr>
        <tr><td>宋广发</td><td>男</td><td>22</td> <tr>
        <tr><td>饶宇宇</td><td>女</td><td>24</td> <tr></tr>
        <tr><td>周游</td><td>男</td><td>23</td> <tr></tr>
    </table>
    <!-- 表头单元格 -->
    <table align="center"  border="1" cellpadding="0" cellspacing="0" width="500" heigth="250">
        <tr><th>姓名</th><th>性别</th><th>年龄</th></tr><!--表头单元格 -->
        <tr><td>姓名</td><td>性别</td><td>年龄</td></tr>
        <tr><td>宋广发</td><td>男</td><td>22</td> <tr>
        <tr><td>饶宇宇</td><td>女</td><td>24</td> <tr></tr>
        <tr><td>周游</td><td>男</td><td>23</td> <tr></tr>
    </table>


</body>
</html>